function isNumber(str)
  if tonumber(str) ~= nil or str == 'inf' then
    return true
  end
end
local tspeed = 1
local hb = game:GetService("RunService").Heartbeat
local tpwalking = true
local player = game:GetService("Players")
local lplr = player.LocalPlayer
local chr = lplr.Character
local hum = chr and chr:FindFirstChildWhichIsA("Humanoid")
while tpwalking and hb:Wait() and chr and hum and hum.Parent do
  if hum.MoveDirection.Magnitude > 0 then
    if tspeed and isNumber(tspeed) then
      chr:TranslateBy(hum.MoveDirection * tonumber(tspeed))
    else
      chr:TranslateBy(hum.MoveDirection)
    end
  end
end